Catalytic behaviour of combined palladium-acid catalysts: use of Al and Zr-pillared montmorillonite as supports

Issaadi, Rachid; Garin, F.; Chitour, C. E.; Maire, G.

doi:10.1016/s0926-860x(00)00664-5

Cited by 29 publications

(14 citation statements)

References 28 publications

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“…The starting clay mineral is an Algerian bentonite and the preparation of the sulfated zirconium pillared montmorillonite has been described elsewhere [7]. To the sodium montmorillonite fraction (<2 mm) obtained from the raw bentonite, ZrOCl 2 Á8H 2 O solution is added.…”

Section: Methodsmentioning

confidence: 99%

“…The resulting microporous pillared clays have also shown catalytic aptitude in variety of acid mediated reactions like isomerization [5,6]. In recent works [7,8], we have shown by dispersing a metallic function, e.g. palladium on three pillared clays: aluminium-pillared-sodium-montmorillonite, aluminium-pillared-acid-activated-montmorillonite and sulfated-zirconiumpillared-sodium-montmorillonite that a bifunctional catalyst is obtained, able to catalyse such reactions as hydroisomerization of alkanes.…”

Section: Introductionmentioning

confidence: 99%

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Palladium–sulfated zirconium pillared montmorillonite: Catalytic evaluation in light naphtha hydroisomerization reaction

Issaadi¹,

Garin²,

Chitour³

2006

Catalysis Today

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Palladium–sulfated zirconium pillared montmorillonite: Catalytic evaluation in light naphtha hydroisomerization reaction

Issaadi¹,

Garin²,

Chitour³

2006

Catalysis Today

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“…-pillared montmorillonite (denoted as Al 13 -Mont) was prepared according to the method described in literature [26,27]. The pillaring solution of [AlO 4 Al 12 (OH) 24 (H 2 O) 12 ] 7?…”

Section: Synthesesmentioning

confidence: 99%

“…-pillared montmorillonite (denoted as Zr 4 -Mont) was prepared according to the method described in literature [27,28]. A 0.1 M ZrOCl 2 solution was added to a suspension of the montmorillonite at a ratio of 1 mmol Zr per gram of montmorillonite.…”

Section: Synthesesmentioning

confidence: 99%

Selective Hydrocracking of Fischer–Tropsch Waxes to High-quality Diesel Fuel Over Pt-promoted Polyoxocation-pillared Montmorillonites

et al. 2009

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Polyoxocation ([AlO 4 Al 12 (OH) 24 (H 2 O) 12 ] 7? and [Zr 4 (OH) 14 (H 2 O) 10 ] 2? )-pillared montmorillonites were prepared by ion exchange, and they were used as solid acid catalysts, in comparison to some other solid acids, for the selective hydrocracking of Fischer-Tropsch waxes to diesel-ranged hydrocarbons. XRD patterns and elemental analyses proved that the polyoxocations were successfully introduced into the interlayer region of the montmorillonites. N 2 adsorption-desorption measurement indicated that polyoxocation-pillared montmorillonites have large BET surface areas ([230 m 2 g -1 ), high thermal stability ([673 K), and large pores (comparing to those in zeolites). FT-IR spectra of chemisorbed pyridine indicated that polyoxocation-pillared montmorillonites possess both Lewis and Bronsted acid sites on the solid surface. Temperature-programmed desorption of ammonia indicated that the acidity strength of the polyoxocation-pillared montmorillonites was weaker than those of H-ZSM-5, H-Y, WO

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“…[2][3][4] Nowadays, the oxidation of VOC over supported noble metal (Pt, Pd or Rh) catalysts has been intensively studied. [5][6][7] But for their high prices and scarcity of noble metal, particular attention has been paid to the preparation and characterization of new, low-cost and efficient catalysts for the oxidation of VOC.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of New Material‐‐La/Zr/MMT Employed in Acetone Oxidation

et al. 2007

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A new material of zirconium pillared montmorillonite added with lanthanum (denoted as La/Zr/MMT) was prepared for acetone oxidation. Surface properties of the catalysts were investigated by means of XRD, TEM, TG-DTA and BET methods. The XRD result indicated that the interlayer space of the montmorillonite was enlarged from 1.57 to 4.85 nm after the treatment with zirconium pillaring and the addition of lanthanum. N 2 adsorption-desorption result showed that by the process of zirconium pillaring, the specific surface area of the sample was increased to 128.0 m 2 /g, which was two times almost as large as pure montmorillonite. Simultaneously, the thermal stability was also enhanced. The activity of the new material on the total oxidation of acetone was investigated, and the results indicated that the catalytic activity of the montmorillonite was greatly improved. Over the sample of La/Zr/MMT, the T 98 of acetone was obtained at 350 , while it needs 400 ℃ over the pure montmorillonite. ℃ After 0.1% Pd was supported on the sample of La/Zr/MMT, the T 98 decreased from 350 to 280 ℃, indicating the montmorillonite is a promising material for the control of some types of the volatile organic compounds such as acetone.

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Catalytic behaviour of combined palladium-acid catalysts: use of Al and Zr-pillared montmorillonite as supports

Cited by 29 publications

References 28 publications

Palladium–sulfated zirconium pillared montmorillonite: Catalytic evaluation in light naphtha hydroisomerization reaction

Palladium–sulfated zirconium pillared montmorillonite: Catalytic evaluation in light naphtha hydroisomerization reaction

Selective Hydrocracking of Fischer–Tropsch Waxes to High-quality Diesel Fuel Over Pt-promoted Polyoxocation-pillared Montmorillonites

Synthesis and Characterization of New Material‐‐La/Zr/MMT Employed in Acetone Oxidation

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